I have a table that contains a varray, which is declared thus:
type CONS_PERIOD_VALUES as VARRAY (50) of NUMBER(13,5)

Now the thing is that I want the varray to be 'padded out' with nulls
so that it always has 50 elements, i.e. if I put 40 values in, then
there should be 10 nulls at the end.
but if I give it (where the first number is the number of elements to
follow):